CA2
CA2/3
CA2/501
64 -
Amplifier Cabinet used in EP5/11 for distribution
amplifiers and power suppliers, together with jackfield,
lines termination panel, cue light sockets etc. CT2/l8.
DD 1968. ACO. WITHDRAWN.
Used with OT2/50l. Includes AMl4/501 and PS3/l3 in CT2/8.
DD 1959. WITHDRAWN.
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CA2 Sub Group not available for new designs DD 1977.
CA4/l
CA4/2
CA4/2B
CA4/2C
CA4/4
CA4/5
CA4/6A
CA4/6B
CA4/7
CA4/8
CA4 SUPPLY CABINETS
Supply Cabinet used with EP5/4. Similar to PSC/2B.
DD 1959. DD Spec 3.291. OBSOLESCENT.
Part of EP5/5. Modified version of PSC/2C with additional
relays. DD 1962. DD Spec 3.332. TI.SX.6. OBSOLESCENT.
Similar to CA4/2 but has only 6 cue light relays. Part of
EP5/6 and EP5/6A. DD 1963. DD Spec 3.337. OBSOLESCENT.
Similar to CA4/2B
maintained lighting
fitted. SCPD 1969.
but gives an additional
supply and has a 4 way
OBSOLESCENT.
feed for
fuseho1der
Supply Cabinet providing independent mains supplies for
BBC and IBA at unattended sites shared by both consumers.
Weatherproof metal kiosk with two compartments fitted as
required with consumers' switchgear and supply authority's
equipment. DD 1967. ACO. OBSOLESCENT.
Power Supply Cabinet similar in function to CA4/2 but for
smaller areas, e.g. recording areas. Metal cabinet 318mm
x 51mm x 152mm with mains isolator and 3 fuses, and 50V
isolator, 5 fuses and 5 relays. DD 1969. OBSOLESCENT.
Supply Cabinet used in radio studio control cubicles,
etc., in place of CA4/2, CA4/2B. Provides 8 mains fuses,
6 50V fuses and mounting for 2 cue lamp relay units
UN21}32A, UN21/32B, UN21/33A, UN21/33B, as required.
870mm x 450mm x 127mm. SCPD 1971. OBSOLESCENT.
Similar to CA4/6A but with provision
PAlO/2 without its mounting brackets,
50V fuses. SCPD 1972. OBSOLESCENT.
for accommodating
in place of the 6
Supply Cabinet for small studios and suites. Provides
isolation, control, distribution and fusing of 240V a.c.
mains and 50V d.c. supplies. Relays to control up to five
mains signal light circuits can be fitted. SCPD 1971.
OBSOLESCENT.
Supply Cabinet, accommodating six 50V fuses, mains feeds

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